Draw-bar yoke



C. E. BAUER.

DRAW BAR YOKE.

APPLICATION HLED MAY 21, 1919.

1,339,940. Patented y 11,192

CARL E. BAUER, 0F HAMMOND, INDIANA.

DRAW-BAR YOKE.

Specification of Letters Patent.

Patented May 11, 1920.

Original application filed October 21, 1918, Serial No. 259,065. Dividedand this application filed May 21,

1919. Serial No. 298,744. I

To all whom it may concern:

Be it known that I, CARL E. BAUER, a citizen of the United States, andresident of Hammond, in the county of Lake and State of Indiana, haveinvented certain new and useful Improvements in Draw-Bar Yokes, of whichthe following is a specification.

My invention relates to draft rigging for railway cars and particularlyto a novel yoke for use in connection therewith.

This application is a division of my copending application Serial No.259,065, filed October 21, 1918 now Patent No. 1,330,575 Feb. 10, 1920.

One of the principal objects of my invention is to provide a draftrigging yoke which may be economically constructed and which whencompleted will have the rigidity and strength of a cast yoke and be ofmuch lighter weight. It is well known that it is desirable to provide asleeve or head adapted to surround the draw bar butt and to connect theyoke arms to the sleeve. The difficulty encountered has been inproviding means of attachment between the yoke arms and the sleeve. Inmy construction I provide a rigid connection of great strength, whichconnection may be made without unusual expense. The principal object indesigning this form of connection has been to avoid looseness withoutperforating and thereby weakening the ends of the yoke arms. The resultis accomplished in my construction by inserting the ends of the yokearms within the sleeve, bending the ends back over the forward edges ofthe sleeve, shoulders being provided adapted to abut the rear edges ofthe sleeve. As the yoke arms are assembled and bent while hot, thecooling thereof will cause such contraction as to rigidly secure theparts in proper relation. In addition I may prefer to spotweld thesleeve and arms, thus insuring a rigid connection.

The invention will be more readily understood by reference to theaccompanying drawing, wherein,

Figure 1 is a longitudinal sectional view through a yoke constructed inaccordance with my invention;

Fig. 2 is a sectional view on the line 2-2 of Fig. 1, and,

Fig. 3 is a perspective view of the sleeve which I employ.

In constructing the yoke as shown herein, I provide a sleeve member 10,having apertured cars 11, through which a fastening key is adapted to bepassed. The sleeve or head is adapted to surround a draw bar yoke andserve as a means of attachment for the arms 12, 13, of the yoke. The barfrom which the yoke arms are formed is bent into U-shape and theintermediate portion thereof is upset or thickened, as at 14. Theforward ends are provided with shoulders 15, adapted to abut the rearedges of the sleeve 10, when the parts are assembled. In forming theyoke the free ends thereof are heated, then inserted into the sleeve andthe projecting ends 16, shown in dotted lines in Fig. 1, are bentbackward over the rounded forward edges of the sleeve.' When 0001, therewill be suflicient contraction to firmly bind the yoke onto the sleeve.In addition I may spot-weld the two thicknesses of metal, as indicatedat 17.

A yoke formed in the manner described may be constructed very cheaply,in fact more cheaply than a cast yoke. The parts are joined without theuse of rivets or any fastening device which necessitates perforating andthereby weakening the parts.

I claim:

1. In a draft rigging device, the combination of a band adapted tosurround and engage a coupler butt, a yoke member comprislng a back walland parallel arms, the

free ends of the arms being provided with shoulders on their outersurfaces, and the ends of the arms being bent back upon themselvesaround the forward edges of the band,

said shoulders being adapted to engage the rear edges of the band, thehooks formed by the backwardly bent ends of the arms being of such depthas to overlie a portion of the band, substantially as described.

2. In a draft rigging device, the combination of a band adapted tosurround and engage a coupler butt, a yoke member comprising a back walland parallel arms, the free ends of the arms being provided withshoulders on their outer surfaces, and the ends of the arms beingbentback upon thenieselves around the forward edges of theband, saidshoulders being adapted to engage the rear edges of the band, the hooksformed by the backward bent ends of the arms being of such depth as tooverlie a portion of the band, the arms being joined to the band byWelding, substantially as described.

Si ned at Hammond, Ind, this 17th day 10 Witness J. M. EBERT.

CARL E. BAUER.

